View Source Avrogen.Avro.Types.Logical.TimestampMillis (avrogen v0.7.1)
This type represents the timestamp-millis type according to the specification
The timestamp-millis logical type represents an instant on the global timeline, independent of a particular time zone or calendar, with a precision of one millisecond.
A timestamp-millis logical type annotates an Avro long, where the long stores the number of milliseconds after midnight, 00:00:00.000.